Em
Here is the meaning and Word Scramble Game information for Em
EM4 is a valid Scrabble Word in NWL, formerly TWL (USA, Thailand, Canada)
EM4 is a valid Scrabble Word in CSW, formerly SOWPODS (Other Countries)
EM5 is a valid word in WWF
(n.) The portion of a line formerly occupied by the letter m, then a square type, used as a unit by which to measure the amount of printed matter on a page; the square of the body of a type.